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First, look at the overall "lighting power factor: low power factor, and illustrate the use of the driving power supply, circuit design is not good, will reduce the lighting life greatly! The power factor is low, the use of good lighting lamp life is not long. The power factor can be detected by the "power factor meter". The power factor of the general export LED panel lamp is more than 0.85. The power factor is less than 0.5, it should be said that the unqualified products or waste products, not only the short life, and the actual power consumption than the nominal is about to double, that is to say, with the ordinary energy-saving lamps, no electricity! So this is the reason why LED panel lights need to drive power supply with high quality, high efficiency the! No "power factor meter" is used to detect the LED lighting power factor of consumers, there is a way to use the "current" to detect two of similar products in the same nominal power, the greater the current and harmonic current is larger, indicating the actual power consumption is large, it is not at the same time, saving! The current is not stable, the life span and the overall lighting adverse life!

Two, "lighting cooling conditions -- materials, structure: radiating LED lighting is also very important, the same power factor and lighting with the quality of the lamp, if the heat condition is not good, light work under high temperature, light will be great, life will reduce lighting. The heat dissipating materials are mainly copper, aluminum and PC. The thermal conductivity of copper is better than that of aluminum. The thermal conductivity of aluminum is better than that of PC. Now the radiator material is generally the most aluminum, and the best is insert aluminum, vehicle aluminum (aluminum profile and extruded aluminum) is the second, the worst is cast aluminum, and the heat dissipation effect of inserting aluminum is the best.